Luke

The ox is a representation of ST. LUKE because he gives a very full account of the sacrificial death of our Lord.

Inasmuch as many have undertaken to compile a narrative of the things that have been accomplished among us, just as those who from the beginning were eyewitnesses and ministers of the word have delivered them to us, it seemed good to me also, having followed all things closely for some time past, to write an orderly account for you, most excellent Theophilus, that you may have certainty concerning the things you have been taught. (Luke 1:1-4, ESV).

The former account I made, O Theophilus, of all that Jesus began both to do and teach, until the day in which He was taken up, after He through the Holy Spirit had given commandments to the apostles whom He had chosen, to whom He also presented Himself alive after His suffering by many infallible proofs, being seen by them during forty days and speaking of the things pertaining to the kingdom of God. And being assembled together with them, He commanded them not to depart from Jerusalem, but to wait for the Promise of the Father, “which,” He said, “you have heard from Me; for John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.” (Acts 1:1-5, NKJV).

[Paul writes:] Our dear friend Luke, the doctor, and Demas send greetings. (Colossians 4:14, NIV).

[Paul writes:] Only Luke is with me. (2 Timothy 4:11, NIV).